To:sot_shift from: Dan Schwartz date: 22 Jul 04, 12:00noon EDT Subject: SOT shift report 2004-07-22 L1827 -------- See http://asc.harvard.edu/acis/SOT_reports/sot-shift.html, or /proj/web-cxc/htdocs/acis/SOT_reports/Jul_22_2004_L1827.txt. Shift L1827. Start at 204:12:00 GMT = 08:00am 22 Jul EDT End 10:00am 22 Jul SOT Lead DAS (Times will be given in GMT on day 204.) PLAN ---- Continue running load JUL1904B. Finish obsid 4615, an ACIS-S monitoring program of the expansion and brightening of the supernova SNR1987A, and attempt to construct spatially resolved spectra. Then do obsid 4976, an ACIS-S study of the cold front in the Abell 496 cluster of galaxies. Then into perigee passage. Next Comms: 204:1315 to 1415 204:1900 to 2000 205:0345 to 0445 205:1045 to 1145 205:1512 to 1710 206:0345 to 0445 206:1100 to 1200 206:1815 to 1915 207:0345 to 0445 207:1100 to 1200 207:1900 to 2000 Orbital events: 2004:204:15:40:49.365 685 EAPOGEE ORBIT APOGEE 2004:205:23:24:23.016 685 EPERIGEE ORBIT PERIGEE 2004:207:07:07:51.926 686 EAPOGEE ORBIT APOGEE 2004:208:14:51:38.391 686 EPERIGEE ORBIT PERIGEE 2004:209:22:34:36.787 687 EAPOGEE ORBIT APOGEE 2004:211:06:18:51.179 687 EPERIGEE ORBIT PERIGEE EVENTS ------ Status at LOS, 204:04:43, was as follows: PCAD MODE = NPNT CONTROL LAW FLAG = NPNT Stars: = 5 FIDS = 3 RA = 83.917 deg Dec = -69.265 deg ROLL = 144.824 deg Format = 2 OBSID = 4615 SN1987a SIM FA = -467 SIM TSC = 75623 (ACIS-S) DITHER = ENAB HETG = OUT (79.46 deg) LETG = OUT (77.59 deg) HRC-S HV is ON EPHIN Geom = LARG E150 = 2.9 E300 = 0.0 E1300 = 0.0 LT 10.0 (RADMON P4GM = 0.0 LT 300. Triggers) P41GM = 0.0 LT 8.47 A-leak = 1.0200 mu-a B-leak = 0.3320 mu-a Ascending through 115921 km. ACIS focal plane temperature -119.9 degC. EPH temp 72.95 degF 13:15 AOS. Status is essentially unchanged. Ascending through 126526 km. ACIS focal plane temperature -119.9 degC. EPH temp 90.56 degF 14:14 LOS Status is essentially unchanged. Ascending through 126866 km. ACIS focal plane temperature -119.9 degC. EPH temp 92.71 degF NOTES/ISSUES/PROBLEMS Paul Plucinsky reports on the ACIS focal plane cooling test: "It looks like the FP got down to -121.5 C and then started warming up after the spacecraft maneuvered into a different attitude presumably because there was some earth in the radiator FOV." . . ."The data are a little tricky to look at because the sampling rate varies during the test and there are some time lags between when the temperature was measured and when it was reported." Shanil Virani reports on the COSPAR meteoroid impact talk: " . . . it garnered a lot of interest and a lot of questions. And because of the excellent flight note prepared by Eric qnd Sabina, and the excellent Leonid planning summary put together by Ken, I had no problem fielding them!!" From the 9am status meeting Two supports over the past day, no issues. One load segment uplinked. On-board loads good until 207:12:30. One more segment to be uplinked to complete the JUL1904 week. Reviewed JUL2604A loads yesterday. Reissued products with a continuity issue corrected. Expect email review and signoff this morning. Engineering continuing patch testing in ASVT, in preparation to be able to use HRC shield rates as a backup to EPHIN. Fire drill to be conducted by Draper sometime after the realtime pass this morning. Quick look data: OBSID Target Time Comment ----- ------ -------------- ------- No New quick looks ------------------------------------------------------- Dan Schwartz, MS #3 das@head-cfa.harvard.edu phone: (617)495-7232 FAX: (617)495-7356 cell phone: (617)512-5627 pager: 877-693-7198 PIN 693-7198 or e-mail 6937198@archwireless.net -------------------------------------------------------